PDF malware analysis — malicious · f59a220b46bd0d60

MALICIOUS

PDF

44.1 KB Created: 2020-09-12 16:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 02818646f3ee0141ef3f20a3aba8cd1b SHA-1: 9131f4b887896cb0a30b62cc1c3e6f8ebf2650c0 SHA-256: f59a220b46bd0d60f0ecc5f76321907772ddf18648de4c8d83663b1ed33475c1

168 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure related to 'Vro omr sheet answer key 2018' and embeds a link to a redirector at 'https://ttraff.club/wix?keyword=vro+omr+sheet+answer+key+2018'. This redirector is flagged as malicious. Additionally, the document exhibits characteristics of an MFA lure, suggesting an attempt to harvest credentials or session tokens. The file also contains a large number of links to benign Shopify-hosted PDFs, likely part of a link farm to improve SEO for the malicious redirector.

Heuristics 5

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.club/wix?keyword=vro+omr+sheet+answer+key+2018
- https://cdn.shopify.com/s/files/1/0434/5207/2086/files/tidetixifimokarije.pdf
- https://cdn.shopify.com/s/files/1/0432/4117/7252/files/5413330120.pdf
- https://cdn.shopify.com/s/files/1/0432/9078/8000/files/vipefivokuvim.pdf
- https://cdn.shopify.com/s/files/1/0430/6580/2903/files/fevugojobuxix.pdf
- https://static.usrfiles.com/ugd/5ecadc_c241f0d1688a41359de765eb04de0bc6.pdf
- https://cdn.shopify.com/s/files/1/0432/7643/5612/files/40520074602.pdf
- https://cdn.shopify.com/s/files/1/0431/3317/3927/files/avery_dna_transforming_principle.pdf
- https://cdn.shopify.com/s/files/1/0433/1290/6405/files/86671610857.pdf
- https://cdn.shopify.com/s/files/1/0433/7857/3464/files/90838843539.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006260.bin` `32e3dd05dc0293148c5e7dc49f13da58608b6ae8106fedcfa32cbd41119270b3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6260	5636 bytes
`font_01_sfnt_off00007579.bin` `19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7579	1936 bytes
`font_02_sfnt_off00007ebf.bin` `1da3835e5cfcaf79c97e26798741446d1cd5b6dcd903e8c0f4e26f4576dddf06`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7EBF	10960 bytes

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